clang-linker-wrapper/LinkerWrapperOpts.td: "--sysroot" => "--sysroot=" (llvm#65313)

"--sysroot"
should be 
"--sysroot="

since it's related to
OPT_sysroot_EQ
and not a
OPT_sysroot

Author: conversy

clang/tools/clang-linker-wrapper/LinkerWrapperOpts.td

@@ -95,7 +95,7 @@ def offload_opt_eq_minus : Joined<["--", "-"], "offload-opt=-">, Flags<[HelpHidd
   HelpText<"Options passed to LLVM">;
 
 // Standard linker flags also used by the linker wrapper.
-def sysroot_EQ : Joined<["--"], "sysroot">, HelpText<"Set the system root">;
+def sysroot_EQ : Joined<["--"], "sysroot=">, HelpText<"Set the system root">;
 
 def o : JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
   HelpText<"Path to file to write output">;